Drying roll or cylinder.



No. 727,822. PATBNTED MAY 12, 1903. G. MURGATROYD. D11-11111112011 0R CYLINDER.

APPLmATIoN FILED Novizv. 1901.l 1101101121, 2 SHEETS-snm. 1.

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G. MURGATROYD.

DRYI'NG ROLL -oR CYLINDER.

APPLICATION FILED NOV. 27, 1901.4

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ATENT OFFICE.

DRYING ROLL 0R CYLINDER.

SPECIFICATION'forming part of Letters Patent No. 727,822, dated 'May l12, 1903. Application filed November 27, 1901. Serial No. 83,873- (No model.)

T0 @ZZ whom 1113' may concern,.-

Be it known that I, GEORGE MURGATROYD, a subject of the King of Great Britain, and a resident of the city and county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Drying Rolls or Cylinders; andI do hereby declare the following specification, taken in connection with the accompanying drawings, forming a part of the same, to be a full, clear, and exact description thereof.

The invention relates to drying rolls or cylinders used in connection with the drying of fabrics, in the mannfactureof cotton or paper, or in connection with other machinery where said rolls are constantly supplied and filled with live steam and it is necessary to remove the Water of condensation substantially as fast as formed while the rolls are in operation.

O`ne feature of the invention consistsin providing an ejector that may be fastened longitudinally and parallel to the axis of the roll on the inner surface thereof.

Another feature of invention consists in a novel form of ejector adapted for use in rolls that may be run in either direction.

Another feature consists in a new method of fastening the spiral conductor forming a part of the ejector in long rolls.-

The invention also consists of certain further features to be hereinafter described and claimed.

Any of said features of invention may be used in constructions where some or all of the other features are absent,or all of the features maybe embodied in the same structure.

In describing my invention in detail reference will be made to the accompanying drawings, in which- Figure 1 is a longitudinal sect-ion of a drying roll or cylinder embodying my improved water-ejector in its preferred form. Fig. 2 is a transverse sectional view on Vline 0c ac, Fig. 1. Fig. 3 is a transverse sectional view of the double ejector for use in rolls running in either direction. Fig.4 is a longitudinal sectional view of a roll provided with two ejec! tors. Fig. 5 is a longitudinal sectional View of a long roll, showing my improved spiral conductor forming a part of the ejector. Fig. 6 is a transverse sectional view on line y y,

Fig. 5 ;fand- Fig. 7 shows a `section of the spiral gutter detached. r

Y Referring to the drawings, Fig. 1 represents a large size vdrying-roll having the cylindrical body portion l and the end portions 2 and 3, provided with'hollow trunnions .tand 5, respectively. Onlth'e inner surface of the roll is fastened my improved ejector,which I construct, preferably, in the form of a narrow chamber or pocket extending longitudinally of theroll and having an outlet-pipe 6 extending 'nto the hollow trun'nion 5. This chamber is preferably in the forrn of a rightangle triangle, the short side 7 extending substantially parallel to the endof the roll, the long side 8 extending longitudinally and fastened to the inner curved surface of the roll parallelA to its axis, and the hypotenuse or inclined side 9 extending diagonally from the inner curved face of said roll to one'ofthe hollow trunnions. The Wall 10 of the ejector is preferably provided with a flange 1l for fasteningsaid ejector to the inner curved surface of the roll, either lby soldering or riveting or in any other desired manner. The opposite wall 12 is bentrover and away from said Wall 10 to form a curved ange 13, as shown iin Fig. 2, extending substantially parallel to the inner curved surface of the roll, thereby forming'an opening or inlet 14 to the pocket or chamber extending the entire length of the roll. As the steam in the roll condensesthe vwater falls toV the bottom of the inner curved surface of the roll, and as said roll is revolved, bringing the wall 10 to the bottom thereof, the Water enters the opening 14 and strikes the wall 10 of said roll, and as the roll continues to revolve the wall 10 lifts the water until said wall reaches a position above the horizontal,when the water will fiow down said Wall onto the inclined side 9 and down said side and out through the opening or outlet o'.

As shown in`Fig. 2, the curved iiange 13 vacts both as a guidetodirect the water into the opening in ejector and as a guard to prevent the water from tiowing back and away from the inlet until the wall 10 reaches a position above the horizontal,when the water will flow down said wall into the outlet-pipe 6. The Wall 12 is preferably constructed to converge toward the wall 10 as it approaches the IOO wall of the cylinder, thereby contracting the inlet, as shown in Fig. 2, and thus qdecreasing the liability of the Water which may remain in the ejector during the last quarter-turn of the revolution of the roll escaping through the inlet.

Fig. 3 shows my improved ejector in its double form, which is adapted for use in rolls to be run in either direction. In this construction the ejector has a center wall or partition 10' and two side walls 12 12'. The outlet-pipe (i may also be provided with a center wall, if desired; but this is not essential. With this construction a pocket or ejector is formed 'on each side of the center wall 10, provided with openings 14 14 to each of said pockets, respectively. Thus as the roll is revolved in one direction the water. will strike the center wall 10 on one side and be raised by it until it will enter the opening to the pocket on that side of said center wall. If it should be desired to reverse the roll and run it in the otherdirection, the water will be raised so as to enter the pocket on the other side of said center wall.

Fig. 4 shows two of my improved ejectors in one roll. In rolls of a large diamater, which necessarily contain a larger amount of steam and which revolve slower than the ordinary-sized rolls, the water will collect quite rapidly, and in such rolls the ejectors nowin use are found inadequate to accommodate all the water that may collect in one revolution. With my improved form ofejector I can place two or more ejectors in one roll by simply dividing the outlet-pipe into different sections corresponding to the number of ejectors. As shown in Fig. 4, the partition 6' divides the outlet 6 into two parts or sections, thereby forming a separate outlet-pipe for each ejector. This prevents the water flowing from one ejector into the other, as might be the case were there a single outlet-pipe for both ejectors.

Fig. 5 shows my improved spiral conductor forming a part of the ejector in use in a long roll, and Fig. 6 shows my improved method of fastening said conductor. YVith the spiral conductors now in use it is impossible to fasteu them securely to the curved inner surface of the roll, and they are very liable to be forced or sprung away from their fastenings when the roll is subjected to a continual hard pressure on the outside surface. To overcome this objection, I construct my improved conductor in sections adapted to be fastened longitudinally to the roll, and not spirally, as heretofore. To accomplish this, I construct each section preferably of a flat piece of tin having one edge beveled. This beveled edge 15 is bent up at right angles to the body portion 16, forming a beveled side 17. I preferably bend the upper edge of said side 17 back again over the body portion 16 and parallel to it to form a top or cover 18 to said conductor. The body portion 16 is then preferably rolled to conform with the inner curved surface of the roll, and said section is fastened to the roll by solder or rivets along the straight edge 19. This makes a firm and rigid fastening for said spiral conductor and also obviates the necessity for the strengthening rings or spiders now in use. The sections forming the spiral conductor may be joined together in any well-known manner; but it is preferred to overlap said sections at their joints in order to strengthen the same and prevent any leakage at this point. If desired, the conductor may be constructed of one continuous piece of metal provided with triangular flanges instead of being formed in triangular sections.

Wrhat I claim as my invention, and desire to secure by Letters Patent, is

1. An ejector for use in drying-rolls constructed substantially in the form of a triangular pocket extending longitudinally of said roll and having one of its sides provided with a fiange for fastening said pocket to the roll and its opposite side cut away and provided with an outwardly-extending curved flange for guiding the water into said pocket, an outlet, and an inclined side for conducting the water of condensation into said outlet, substantially as described.

2. The combination, with a drying-roll, of a water-ejector in the form of a triangular pocket extending longitudinally of said roll and provided with a fiange for fastening said pocket to the inner curved surface of the roll and a spiral conductor provided with a series of flanges for fastening said conductor to the roll, the lines of fastening of said pocket and conductor being parallel to the axis of said roll, substantially as described.

3. The combination, with a drying-roll, of a Water-ejector in the form of a triangular pocket and a spiral conductor fastened to the inner curved surface of the roll, the lines of fastening being parallel to the axis of the roll, substantially as described.

GEORGE MURGATROYD.

Witnesses:

W. H. THURsToN, J. H. THURsToN.

IOS 

